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Why it matters
The featured offer is not a ranking. It is the default, and the alternatives sit behind a link most shoppers never open. On mobile the other sellers are not on screen at all. So the moment someone else holds the box on your listing, the page still converts — it just converts for them, on stock you sold once, at a price you did not set.
Chart: about four in five marketplace sales go through the featured offer; the remainder reach shoppers who open the other-sellers list.
82% is a widely used industry estimate for marketplace sales flowing through the featured offer; it is not marketplace-confirmed and it is not a Merqi measurement. What we do measure is who holds the box on your listings, every day.
How the revenue leaks
This is the part that does not show up in your sales data. The order was placed, the shopper is satisfied or not, and either way your name is on the box.
Recovering a box does not create demand — the demand was already there. It moves an existing sale back to the channel you control.
Diagram: the four stages by which this problem turns into lost revenue.
What we report
Not a hold-rate percentage. The individual rows underneath it.
The seller as the shopper sees them, not an account ID.
Standing is read from the captured ownership timeline, never inferred from price.
The winning price, and the gap to your reference in euros.
Not a percentage score — the figure your commercial team negotiates with.
The date the box moved, so you are not guessing at a trend.
Movement is flagged against the previous scan, not a monthly average.
In the platform
Every listing where the box is in play, sorted so the worst row is the first row.
How the data is producedPlatform shown through the H.Koenig account, with H.Koenig's permission, for data demonstration purposes.
The problem
Right now, a seller you never appointed a reseller with your stock a marketplace trader an account you cannot name somebody undercutting you is costing you revenue and losing you customers.
They win the sale on a listing you built, to a customer who believes they bought from you. If that order arrives late, damaged or grey-market, you lose a customer and the revenue both — and neither ever appeared in your channel to begin with.
Undercutting is only the visible half. The rest of the damage never announces itself.
And it is never just one thing
A lost buy box is the one you can see. Merqi reads all seven on the same scan, so the damage you have not noticed shows up beside the damage you have.
Why one row matters
The featured offer is not a ranking, it is the default. The other sellers sit behind a link most shoppers never open, and on mobile they are not on screen at all. So when someone else holds the box on your listing, the page still converts — for them, on your product, at a price you did not set.
What a lost box actually costsThe size of the prize
10–30%+
revenue our clients can recover
Every buy box lost to an unauthorised seller is a sale made at a price you did not set, on a listing you paid to build. Recovering those listings, closing the coverage gaps and holding distributors to their terms is where the range above comes from.
See what one scan cycle foundIndicative range. What Merqi recovers for your catalogue depends on how many of your listings are contested and how far price has drifted — the first report tells you which.
How it works
Every finding starts as a row in the same scan. What changes is the question you bring to it.
Platform shown through the H.Koenig account, with H.Koenig's permission, for data demonstration purposes.
What you get
The first two are what most brands come for. The rest is what they did not know they were missing — and the platform they read it all in.
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On one client account, Merqi reads 4,196 listings across 78 active retailers every day and names every seller holding a box that should have been theirs. Catalogues are unlimited — this is one brand’s shelf, not our ceiling.
July 2026 monitoring cycle, as of 31 July. Platform shown through the H.Koenig account, with H.Koenig's permission, for data demonstration purposes.
Case study and research
One client's ledger, and the two questions every brand asks once they have seen it.
Platform shown through the H.Koenig account, with H.Koenig's permission, for data demonstration purposes.
Go deeper
The latest intel on how buy boxes are set, new legislation across the jurisdictions we cover, how to enforce MAP legally, and breakdowns on dealing with rogue sellers — and how to approach each of them using the right ecommerce intelligence.
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Platform shown through a client account, with permission, for data demonstration purposes.
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Platform shown through the H.Koenig account, with H.Koenig's permission, for data demonstration purposes.
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Platform shown through the H.Koenig account, with H.Koenig's permission, for data demonstration purposes.
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Hover a panel to play its recording. Platform shown through the H.Koenig account, with H.Koenig's permission, for data demonstration purposes.
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Platform shown through the H.Koenig account, with H.Koenig's permission, for data demonstration purposes.
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Platform shown through the H.Koenig account, with H.Koenig's permission, for data demonstration purposes.
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A workbook is generated at the end of each scan cycle. The first one appears here once your first scan completes.
Get a free audit of your listings{{ exportSheet.footnote }}
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Buy-box hold rate
Alerts by kind, by week
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